Improved sash-fastenee



O. C A-TE,v OF BOSTON, MASSACHUSETTS.

letters Patent No. 76,891, dated April 21, 1868; antedated April 9,1868.

' IMPROVED SASH-FASTENBR.

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TO ALL WHOM IT MAY CONCERN: y

Be it known that I, O.. GATE, of Boston, in the county ofSuilolk, andState of-Massachusetts, have invented a. new and improved Sash-Fastener;and I dohcreby declare that the following isn full, clear, and exactdescription thereof, which will enable others skilled in the art to makeand'use the same, reference being had to the accompanying drawings,forming part of this specification.

The fastener embraced in the present invention is so constructedandarranged in its several parts as to be simple, durable, strong, andeffective, and when fastened, secure against being opened from theoutside, the construction boing such as to enable lthe use of springs tobe entirely dispensed with.

In the 'accompanying plate of drawings, my improved saslrfastener' sillustrated- Figure 1 being-ja plan or top view of the same,^showingitfas 'applied to a block of wood, and with the parts Acomposing itfastened. e

Figures 3, 4, and 5, detail vviewslof the yvarious parts composing thefastener detachedfrom each other. Similar letters-of reference indicatelike parts. f A, in the drawings, represents my improved sash-fastener,which is made. in t'wo parts, B and C, one, B, of

Figure 2, atransverse section, taken in the plane of thelinea: sv, g 1.

which is to be applied to the lower sash, and the other, C, to the uppersash, in such positions, relatively, that when the two sashes are closedthey will lie-directly opposite to each other. y

The part B, to thc lower sash, consists of a plato, D, by which, throughscrews or other suitable fastenings,

it is secured to the lowerA sash. To the upper side of this plate D,another plate, E, is secured, that is raised.

above the same by a ange, F, along the front edgeC, leaving an opening,H, between tbc back I and endor side, J, edges. K, a slot, in upperplate E, extending from thefront to the back edges thereof, or nearlyso,through which slot extends the stem L of a knob, M. N, a cross-arm, toinner end of stem L, upon the under side ot' upper plate E. In cross-armN, extending in the direction of its length, arc-slots, a. The slots aare in the same line with each other, but are separated at o.

O, two arxns,`each bent up at one end, and at the other` bent or curved,with a stud or pin, C,'xed inthe outer end. These arms are hung att to afulcrum-pin of -the lower plate, D, and by their pins e are engaged withthe slotsa'of thecros's-armto the spindle, so'that by moving the knob Mforward or'baekwardin-the slot to the plato E, such arms are eitherswung out into lines parallclwith'each other and thc said slot, or intoone and the same direction, or nearly so, or, in other words, in a lineat right angles `to the said slot, the arms, when in a paralleldirection, being brought by their bent-up ends about the rear side, R,to tho raised portion, S, (under the top-plate T, of which they pass,)to the part of the attachment applied to the upper sash, where theyarefastcnod, as will be now described. v

U, a slide, arranged to move upon the under side of the plate T, beingguided between ways, J, of the same, so as to move in a 4directiontoward the rear side It to said plate T. Thisslide, U,'is out outiu itscentre, and within and against such c ut-out portion acts the cam or armV, to a spindle, W, arranged to'turn in the plate T, this spindle beingprovided with n milled head, X, suitable for turning it. The cam V is-ofsuitable combined together, substantially as and sofas to operate asdescribed.

shape, that when turned either tol the right or left, it will throw outor dra-w in the slide from the back edge to the plate,""as the case maybe, the slide, when out, by its end`shoulders or oorn'ers,'Z, setting bythe bent-up ends of the arms O, if in the position shown in iig. 1, and,consequently, there holding or securing them.

From the above description of my improved fastener, it is plainlyobvious thatv First, no springs are needed. V 1

Second, it is simple, eiiieient, and most perfect and secure. I

Third, it cannot be unfastened from the outside, except the sash-framesor the glasses thereof be broken or cut sueiently for thc person tograsp the fastening.

What I claim as new, and desire to secure by Letters Patent, isp y, v Afastener for window-sashes, ttc., composed of an arm or arms, O, and aslide, U, when arranged and Q; GATE( Witnesses: f

CHARLES GATE, MICHAEL A. O'BMEN.

